Hotbed sash operator



Feb. 7, 1950 F. PULEO HOT BED SASH OPERATOR 2 Sheets-Sheet 1 Filed Dec.11, 1945 ml M MIIDN m. m N 0 mmuMw 1N D! A KM M rm Y B Feb. 7, 1950 F.PULEO HOT BED SASH OPERATOR 2 Sheets-Sheet 2 Filed Dec. 11, 1945INVENTOR. FRANK P0450.

ATTORNEY.

Patented Feb. 7, 1950 UNITED STATES PATENT OFFICE HOTBED SASH OPERATOR.

Frank Puleo, Denver, Colo.

Application December 11, 1945, Serial No. 634,222

6 Claims.

This invention relates to a hot bed sash operating device for liftingand tilting hot bed sash.

Gardeners hot beds consist of relatively long boxes containing theproper bedding material for starting and forcing the growth of plants.The boxes are covered by a plurality of sashes. It is desirable duringperiods of sunshine to block the sash open so as to allow air tocirculate about the plants and it is, of course, desirable to open thesides of the sash away from the direction of the wind to preventchilling wind from blowing into the beds. For instance, should a westwind be blowing, the east side of the sash should be tilted upwardly,and should an east or north wind be blowing, the west or south sides,respectively, of the sash should be tilted upwardly. Since the beds areoften exceedingly long and in some cases have hundreds of sash, thelifting and blocking of each individual sash in the proper direction isa timeconsuming operation, and it is exceedingly difficult toaccommodate the various changes in wind directions.

The principal object of this invention is to provide an exceedinglysimple mechanism whereby all of the sash throughout the length of a hotbed can be tilted and supported simultaneously in any desired direction,and which will require less time in its operation of the sash of anentire bed than was formerly required for a single sash.

Other objects and advantages reside in the detail construction of theinvention, which is designed for simplicity, economy, and efliciency.These will become more apparent from the following description.

In the following detailed description of the invention, reference is hadto the accompanying drawing which forms a part hereof. Like numeralsrefer to like parts in all views of the drawing and throughout thedescription.

In the drawing:

Fig. l is a plan view of a typical hot bed, with the center portionthereof broken away, illustrating the improved sash operator appliedthereto;

Fig. 2 is a longitudinal section of the bed, taken on the line 22, Fig.1;

Fig. 3 is an enlarged, detail top view illustrating the type of sashlifting links as employed in this invention;

Fig. 4 is a side view of the links of Fig. 3;

Fig. 5 is an enlarged, detail section, taken on the line 5-5, Fig. 6;

Fig. 6 is a horizontal, detail section, taken on the line 6-43, Fig. 2;

Fig. 7 is a similarly enlarged detail section, taken on the line 7-4,Fig. l and Fig. 8 is a longitudinal section through an end sash of a hotbed, illustrating an alternate form of operator.

'In the drawing, a typical hot bed frame is indicated at H), divided bymeans of partitions or cross bars 5! into a plurality of sash frames. Aconventional hot bed sash l2 containing a plurality of glass panes restsin each sash frame. The sash l2 are not attached to the sash frames butare simply retained in place by gravity,

In applying the invention to the hot bed l0, two draw bars l3 and M areextended throughout the entire length of the frame It across one end ofthe sash l2, as shown in Fig. l. The draw bars I3 and i4 rest uponrollers l5 supported in suitable roller brackets I6 (see Fig. 7) whichare secured to the side board of the bed I 0 by means of suitable boltsIT.

The bars i3 and M project from both extremities of the bed and at oneextremity the bar i3 is secured to an L-shaped link i 8 terminating in aright-hand threaded nut IS. A similar link 20 is secured to the draw barI 4 and terminates in a left-hand threaded nut 2|. A threaded liftingscrew 22 extends through the nuts l9 and 2i, it having a right-handthread on one-half of its length and a left-hand thread on the otherhalf thereof. The screw 22 terminates in a hand crank 23, or in anyother suitable device by means of which it can be rotated.

It can be readily seen that if the crank 23 is rotated, the bars l3 andI4 will be moved in opposite directions due to the opposite threads onthe screw 22. This opposite movement of the bars is employed to actuatepairs of arcuate lifting links 24 which are shown in detail in Figs.

3 and 4. One of the links 24 of each pair is hingedly mounted on the barI3 by means of a pivot member 25. The other link 24 of each pair issimilarly mounted on the bar M by means of a similar pivot member 26.The free extremities of the two links are hinged together by means of a.hinge pin 21.

It can be readily seen that when the bar I3 is moved to the left and thebar M is moved to the right, the extremities of the links 24 will bespread, as shown in solid line in Fig. 4, so as to lower the hinge pins21. If the bar l3, however, is moved to the right and the bar 14 ismoved to the left, the pivot members 25 and 26 will approach each otherso as to elevate the hinge pin 21, as shown in broken line in Fig. 4.This raising and lowering of the hinge pin 21 is employed for liftingthe sash I2, as shown in Fig. 2.

In order to lift either side of each sash, as well as the entire endthereof, means must be provided for moving the pairs of links 24 beneatheither side of each sash. This is accomplished by means of a hand lever28 provided with a latch grip 29. The hand lever is rotatably mounted at30 on a suitable bracket 3| attached to a corner of the bed ID by meansof suitable bolts 32 or in any other desired manner.

The latch grip 29 operates a latch 33 in a notched sector 34 on thebracket 3! so as to enable the lever 28 to be locked in 'threepredetermined positions, indicated at A, B, and C, Fig. 2. The lever '28is slotted, as shown at 35, to receive a stud bolt 36 which projectsfrom a thrust bearing 31 surrounding the screw 22, the screw beingrotatable in the bearing 31. The bearing 3'! is prevented frommovinglongitudinally of the screw 22 by means of thrust collars 38 thereon orin any other desired .manner.

It can be readily seen that when the lever 28 is moved forward and back,it will act through the thrust bearing 31 .to move the screw 22 forwardand back, causing both bars 13 and [4 to move simultaneously. When thelever is .in the dotted line position Asof Fig.2, each pair of links '24will be positioned beneath :the far side of each sash 1 2, as shown insolid .line in Fig. 2, so that when the crank 23 is rotated, the farside of .each sash will be elevated. To elevate the near side of eachsash, it is only necessary to rotate the crank 23 to lower the links 24and then shift the lever 28 to the position B of Fig. 2. This places apair of the links 24 beneath the near side of each sash so that, whenthe crank 23 is rotated, the near sides thereof will be elevated. Tolift the entire end of each sash, the crank 23 is rotated to 'againlower the links 24 and the lever 28 is moved to the position C. This.moves each pair of links sufficiently close to the center line of eachsash so that, when the crank 23 is again rotat.ed,the entire end of thesash will be-elevated, as indicated in broken line at C, Fig. .2.

'It can be readily seen that with the above structure each and everysash throughout the entire length of a hot bed can be inclined andopened on three sides, usually the east, west, and south sides. It'isunnecessary to lift the opposite end of the sash as the sash are usuallyinstalled with this end toward the north, and it is not des'ira'bleitoadmit north winds to the bed.

It will be noted that, when the lever '28 is moved to the position A orC, one of the pairs of the links 24 will be on the extremity of the bed.Should occasion arise where it is not desired to have this projection, adevice such as illustrated in Fig. 8 may be employed for lifting the endframes.

This device comprises a vertically slidable push bar 39 which isvertically movable in a fitting 40 mounted on the end board of the bedH]. A flexible member such as a link chain 4! extends over a suitablepulley 42 in the fitting 4U, thence under a second pulley '42 in thenext adjacent bed, thence upwardly to connection with the side of theadjacent sash l2. As illustrated in Fig. 8, the device is shown appliedto the last sash of the bed. It could, however,be similarly applied tothe first sash or any other desired sash in the bed. As illustrated, thenear side of each sash will be elevated directly by the links 24 whenthe lever 28 is in the position C, as shown in broken line in Fig. 8.When the lever is moved to the position A, however, the links will movefrom under the last sash to lift the far side of the next to the lastsash. As the latter side elevates, it will draw upon the chain 4!,causing it to pull the push bar upwardly to similarly ele vate the farside of the last sash, as shown in solid line in Fig. 8.

In installations where a lever such as the lever 28 is not desirable, itmay be replaced by any equivalent device such as a jack screw, etc. Ifdesired, amotor could be employed to rotate the lifting screw and alsoto shift the positions of the pairs of links.

While a specific form of the improvement has been described andillustrated herein, it is desired to be understood that the same may bevaried, within the scope of the appended claims, without departing fromthe spirit of the invention.

Having thus described the invention, what is claimed and desired securedby Letters Patent is:

1. A device for tilting the sash of a hot bed havin a :plurality ofadjacent unattached sash comprising: a pair of longitudinally movabledraw bars extending in parallel relation throughout the length of saidbed across one extremity of each sash; a pair of lifting linkspositioned on said bars beneath each sash, the links of each pair beinghinged together attheir one extremity and each link of each pair beingpivotally secured to one of said bars at its other extremity so thatsaid latter extremities can be caused to approach or separate from eachother by relative movement of said bars to raise and lower thehinged-together extremities thereof to lift said sash; and means forimparting relative opposite movement to said bars; and -a second meansfor simultaneously moving both bars in the same direction so as to movethe hinged-together extremities from one side of each sash to theopposite side of the next adjacent sash so that the sash may .be tiltedin-either desired direction.

2. A device for tilting the sash of a hot bed comprising: a pair oflongitudinally movable drawbars extending in parallel relationthroughout the length of said bed across one extremity of each sash; apair of lifting links positioned on said bars beneath each sash, thelinks of each pair being hinged together at their one extremity and eachlink of each pair being pivotally secured to one of said bars at itsother extremity so that said latter extremities can be caused toapproach or separate from each other by relative movement of said barsto raise and lower the hinged-together extremities thereof to lift saidsash; means for imparting relative movement to said bars; and means formoving both bars longitudinally in unison to position said pairs oflinks beneath desired points of said sash to tilt the latter in aplurality of directions.

3. ,A 'device for tilting the sash of a hot bed comprising: a pair oflongitudinally movable draw bars extending in parallel relationthroughout the length of said bed across one extremity of each sash; alifting means for each sash carried by said bars and actuated inconsequence of relative movement between said bars for contacting andlifting said sash; a threaded shaft having right and left-hand threads;a right-hand nut and a left-hand nut threaded on said shaft; means forconnecting each of said nuts to one of said bars; means for rotatingsaid shaft to impart relative movement to said bars; and means formoving said threaded shaft longitudinally to impart simultaneousmovement to both bars so as to move said lifting means to any desiredposition relative to said sash for selectively tilting the latter.

4. A device for tiltin the sash of a hot bed comprising: a pair oflongitudinally movable draw bars extending in parallel relationthroughout the length of said bed across one extremity of each sash; alifting means for each sash carried by said bars and actuated inconsequence of relative movement between said bars for contacting andlifting said sash; a threaded shaft having right and left-hand threads;a right-hand nut and a left-hand nut threaded on said shaft; means forconnecting each of said nuts to one of said bars; means for rotatingsaid shaft to impart relative movement to said bars; a thrust memberrotatably mounted on said threaded shaft; means for preventinglongitudinal movement of said thrust member on said shaft; and meansconnected with said thrust member for moving said shaft longitudinallyto impart simultaneous movement to both bars.

5. A device for tilting the sash of a hot bed comprising: a pair oflongitudinally movable draw bars extending in parallel relationthroughout the length of said bed across one extremity of each sash; alifting means for each sash carried by said bars and actuated inconsequence of relative movement between said bars for contacting andlifting said sash; a threaded shaft having right and left-hand threads;a right-hand nut and a left-hand nut threaded on said shaft; means forconnecting each of said nuts to one of said bars; means for rotatingsaid shaft to impart relative movement to said bars; a thrust memberrotatably mounted on said threaded shaft; means for preventinglongitudinal movement of said thrust member on said shaft; a lever; andmeans connecting said lever to said thrust member for moving said shaftlongitudinally.

6. A device for tilting the sash of a hot bed comprising: a pair oflongitudinally movable draw bars extending in parallel relationthroughout the length of said bed across one extremity of each sash; alifting means for each sash carried by said bars and actuated inconsequence of relative movement between said bars for contac ing andlifting said sash; a threaded shaft having right and left-hand threads;a right-hand nut and a left-hand nut threaded on said shaft; means forconnecting each of said nuts to one of said bars; means for rotatingsaid shaft to impart relative movement to said bars; a thrust memberrotatably mounted on said threaded shaft; means for preventinglongitudinal movement of said thrust member on said shaft; a lever;means connecting said lever to said thrust member for moving said shaftlongitudinally; and means for setting said lever in predeterminedpositions.

FRANK PULEO.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 740,953 Van Noorden Oct. 6, 1903842,895 Lovell Feb. 5, 1907 1,890,767 Adams Dec. 13, 1932 FOREIGNPATENTS Number Country Date 119,164 Switzerland Apr. 16, 1927

